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IM-P403-89

EMM Issue 8

20 21 22

Bottom

blowdown

relay

Input

Open

Fig. 20 BCVxx Blowdown Valves with 24 Vac / dc Supply 2cable / 3pt

Must be common to both connection ends

Must not be mixed between Vac and Vdc

1 2 3 4 5

6 7 8

9 10 11

Alarm 1 relay Control relay

3 A

Fuse

1 A

Fuse

Alarm

Norm

Input

3 A

Fuse

pen

Input

3 A Fuse

Caution

live

terminal

AC supply Burner

supply

BCV4x,6x,7x & 8x

Optional Limit Switch

2a valve opening

2b valve closing

AVF234S

Limit Switch Box

4 5 6

7 8 9

0V (Common) *

24 Vac / dc **

S2 ( Xs2 )

Valve Closing

S1 ( Xs1 )

Valve Opening

21 1

Содержание BC3250

Страница 1: ...om the run mode by pressing and holding down the OK button for 5 seconds The bar graphs will disappear and the display will show PASS CODE with 8888 at the bottom right corner of the screen The flashi...

Страница 2: ...if used within approximately 1 metre 39 of the product or its wiring The actual separation distance necessary will vary according to the surroundings of the installation and the power of the transmitt...

Страница 3: ...nction correctly Not used to provide electrical safety Clean earth ground Safety earth Caution risk of electric shock Caution risk of danger refer to accompanying documentation Optically isolated curr...

Страница 4: ...g gear if required 1 3 Lighting Ensure adequate lighting particularly where detailed or intricate work is required 1 4 Hazardous liquids or gases in the pipeline Consider what is in the pipeline or wh...

Страница 5: ...to assess the risks taking into account the task the individual the load and the working environment and use the appropriate handling method depending on the circumstances of the work being done 1 13...

Страница 6: ...r form other than as expressly granted here without the prior written consent of Spirax Sarco Limited 2 1 General description The BC3250 is a blowdown controller for steam boilers It controls TDS tota...

Страница 7: ...The OK button is used to clear errors or alarms OK BC3250 100 50 0 SP PV AL Fig 1 Front panel keypad and definitions Graphic display Clears any errors or alarms Press and hold for 5 seconds 2 2 Front...

Страница 8: ...t digit is blanked off or always reads zero Information line displays the various control states and process units Three bar graphs which shows a percentage of full scale PV Process Variable the highe...

Страница 9: ...sis AL Fig 5 Graphics display definition trend graph 100 50 0 M Information line Examples Units ALARM STATE PV value 8 minutes or hours or day Percentage scale Timescale designator M Minutes H Hours D...

Страница 10: ...w ALARM will be shown first followed by the type of alarm See Section 9 Fault finding for types of errors Example of alarm status 7000 PPM 7000 ALARM 7000 HIGH TDS If a bottom or TDS blowdown occurs B...

Страница 11: ...rded times See commissioning TIMER MODE OFF menu BB BLDN a timed bottom blowdown is occurring i e the valve is open TDS blowdown valve Conductivity Total Dissolved Solids BLOWDOWN Indicates either the...

Страница 12: ...lashing AL and S cm or ppm 300 AL HYST Shows the alarm hysteresis chosen by the user A damping effect for turbulent conditions Normally 3 of alarm figure 0 50 PROBE F Shows probe factor an indication...

Страница 13: ...timer duration 0 29 TIMER S Timer duration now Shows elapsed duration time in seconds Timer duration now is shown only if timer duration 0 11 TIMER Timer interval now Shows elapsed interval time in ho...

Страница 14: ...e damage should be recorded immediately on the carrier s copy of the delivery slip Each carton should be unpacked carefully and its contents checked for damage If it is found that some items have been...

Страница 15: ...ise cause over frequent switching of the blowdown or dump valve This could be caused for example by boiler firing rate variations by the feedpump operating or by sudden changes in boiler load If the w...

Страница 16: ...mulative boiler firing time Fig 7 Output with purge time set 0s 3 3 Outputs 3 3 1 Continuous output Used when the probe is mounted in the boiler The probe is able to constantly monitor the conductivit...

Страница 17: ...ures A test function provides the operator with a diagnostic facility Inputs can be measured and outputs can be set from the front panel The controller also displays the approximate probe factor direc...

Страница 18: ...IM P403 89 EMM Issue 8 18 3 5 Typical applications Boiler control systems BCS Fig 9 BCS1 system smaller boiler Fig 10 BCS2 system coil boiler OK BC3250 100 50 0 SP PV AL OK BC3250 100 50 0 SP PV AL...

Страница 19: ...L Fig 11 BCS3 system TDS control with integral take off and continuous monitoring point from the side of the boiler OK BC3250 100 50 0 SP PV AL Fig 12 BCS4 system TDS control with intermittent monitor...

Страница 20: ...turn and will redirect the flow to drain if the conductivity increases above a pre set level to avoid contaminated water being returned to the boiler feedtank It will not detect contaminants that do n...

Страница 21: ...ning The boiler control panel or enclosure doors must be kept closed at all times unless installation or maintenance work is being carried out Do not attempt to open the product it is sealed and has n...

Страница 22: ...tout Minimum panel thickness 1 mm if the bezel is used The product has integral threaded inserts M4 x 0 7 at the top and bottom of the front panel Two M4 x 25 mm screws are provided together with fibr...

Страница 23: ...IM P403 89 EMM Issue 8 23 4 2 mm 10 mm 22 mm Fig 15 Chassis plate panel cutout diagram 112 mm 67 mm 10 mm 45 mm 92 mm 22 5 mm 4 2 mm 15 mm 4 2 mm 4 2 mm 120 mm 8 mm 112 mm 120 mm...

Страница 24: ...at 3 amps must be included in all phase conductors of the installation wiring If overcurrent protection is included in both supply wires then the operation of one must also cause the operation of the...

Страница 25: ...live and neutral wire together If one wire becomes loose the other wire will prevent it from touching accessible parts 13 A disconnecting device switch or circuit breaker must be included in the buil...

Страница 26: ...ltages All other components connectors conductors 5 The wiring diagrams show relays and switches in the Power Off position 6 Where the probe is fitted in the blowdown line and a purge is required 10 6...

Страница 27: ...N Fig 18 BCV30 230 115 Vac blowdownvalve Caution live terminal AC supply Burner supply Fig 19 BCV1 BCV20 or BCV31 solenoid valves See Section 5 2 Mains wiring notes Link Link BCV30 230 115 Vac Blowdo...

Страница 28: ...ixed between Vac and Vdc 1 2 3 4 5 6 7 8 9 10 11 Alarm 1 relay Control relay 3 A Fuse L 1 A Fuse N Alarm Norm Input 3 A Fuse BACK FRONT Open Input 3 A Fuse Caution live terminal AC supply Burner suppl...

Страница 29: ...nds 1 2 3 4 5 6 7 8 9 10 11 Alarm 1 relay Control relay 3 A Fuse L 1 A Fuse N Alarm Norm Input 3 A Fuse BACK FRONT Open Input 3 A Fuse Caution live terminal AC supply Burner supply BCV4x 6x 7x 8x Opti...

Страница 30: ...ixed between Vac and Vdc 1 2 3 4 5 6 7 8 9 10 11 Alarm 1 relay Control relay 3 A Fuse L 1 A Fuse N Alarm Norm Input 3 A Fuse BACK FRONT Open Input 3 A Fuse Caution live terminal AC supply Burner suppl...

Страница 31: ...nds 1 2 3 4 5 6 7 8 9 10 11 Alarm 1 relay Control relay 3 A Fuse L 1 A Fuse N Alarm Norm Input 3 A Fuse BACK FRONT Open Input 3 A Fuse Caution live terminal AC supply Burner supply BCV4x 6x 7x 8x Opti...

Страница 32: ...RS485 Modbus wiring notes SCN E 5 4 Signal wiring notes See Section 10 Technical Information for terminal and cable specification An earth current loop is created if a wire or screen is connected betw...

Страница 33: ...socket is provided with a NPT conduit adaptor for this purpose See the Information and Maintenance Instructions for the CP30 for further details 5 8 Probe in boiler CP32 The probe requires 8 way scree...

Страница 34: ...i e Tx from the product slave is to be connected to the Rx of the master Twisted pair cable should not be required for short lengths of cable 1 5 m 5 ft Standard screened cable should suffice The H D...

Страница 35: ...ly to protective ground earth at one point only Generally this point is at or near the master device Consider terminating the two furthest ends of the bus to match the transmission line impedance A 15...

Страница 36: ...mode and an error will occur If the calibration was incomplete the controller may not provide the correct control The product has no battery The programmed settings are held in non volatile memory Fla...

Страница 37: ...displayed at the top of the screen and the new sub menu will appear on the next line As you progress through the menu the longer the list becomes This aids navigation of the menu structure MODE INPUT...

Страница 38: ...nal Local regulations and Guidance notes and the boiler manufacturer s recommendations It is imperative that the settings you have accepted will allow the boiler to operate in a safe manner This proce...

Страница 39: ...d See DATA sub menu Configures the input type and commissioning parameters See INPUT sub menu Configures the outputs See OUTPUT sub menu Allows the user to set bottom blowdown time See TIMER sub menu...

Страница 40: ...n exit the valve will revert to CLOSE position MODE OPEN DATA TEMP DATA PH TERM DATA UNITS PH term Used to compensate for the changes in water conductivity due to pH In the UK it is recommended that b...

Страница 41: ...line See Purge sub menu notes This feature is only shown if no purge time is selected i e probe in boiler Increases the damping effect on the probe output If the probe is installed directly in the boi...

Страница 42: ...e probe during the purge and causing an inaccurate reading The display will also only be updated when the blowdown valve is open This means that when the controller is switched on the display will sho...

Страница 43: ...int as is practical weekly to ensure optimum performance Take a sample of the boiler water and measure its conductivity in S cm using a meter such as the Spirax Sarco MS1 If the controller is required...

Страница 44: ...r individual plant Conditions vary widely as do the chemical properties and conductivity of contaminants In many cases the normal measured value of clean condensate will be very low perhaps only 1 or...

Страница 45: ...ced to specific TDS levels and adjusted if required See OUTPUT RETRANS notes Sets the probe cleaning cycle duration interval and pulsed or constant Removes softens probe scaling After a leaning cycle...

Страница 46: ...obe and in the boiler is causing frequent recalibration to be needed Set the duration to zero if the feature is not required Enter an interval time from 1 to 99 hours in 1 hour steps to set how often...

Страница 47: ...0 mA Note If a purge time has been selected the 0 20 mA or 4 20 mA is held at the value recorded at the end of the last purge cycle 0 or 4 mA This selects either 0 or 4 mA default When entering this m...

Страница 48: ...switch box is to be fitted to the blowdown valve actuator If a switch box is not fitted select NONE default Will not show if the duration is zero The time the valve takes to close Only shows if a swi...

Страница 49: ...e if timer switch is fitted and selected Bottom blowdown alarm In the ON position an alarm will occur if the valve fails to lift off the seat after the predetermined time set in the timer menu Select...

Страница 50: ...d be completely black if all pixels are working Press the button to enter test input mode or the button to exit the test mode and return to the main menu Displays the signal on each input TEST OUTPUT...

Страница 51: ...istance in ohms Kohms or Mohms Not visible if no Pt100 is fitted Displays the equivalent operating temperature measured by the Pt100 if connected Displays the equivalent calculated Cell or Probe Facto...

Страница 52: ...ses Resets the system to automatic control The system automatically resets after five minutes Press OK to select Reset SOFTWARE VERSION sub menu Allows the software version to be viewed SW VER PASS CO...

Страница 53: ...1 See Figure 33 Fig 32 IR Bus RS485 IR Bus 1 IR Bus 2 Fig 33 RS485 RS485 To add another slave into an existing IR bus either re select master or turn its power OFF and then ON Only an IR master can p...

Страница 54: ...n controls and alarms do however require testing and inspection General guidance is given in Health and Safety Executive Guidancenotes BG01 and INDG436 in the UK 8 3 General weekly maintenance Take a...

Страница 55: ...ses to be replaced by manufacturer or accredited service department During installation or maintenance the rear of the product MUST be protected from environmental pollutants entering the product Alte...

Страница 56: ...any faults in the wiring external sensors transducers and modules associated with that connection Explanation The internal power supply is unable to power up If the voltages cannot be generated the po...

Страница 57: ...mode and has not pressed a button for 5 minutes or more 1 Re enter the commissioning mode if required 2 Press OK to Clear 3 PV ALARM The TDS has increased above the alarm level 1 Check product is wor...

Страница 58: ...alarm relay for safety Clearing the error from the error screen just removes the message 1 Enter the commissioning setup mode If the correct password is entered all the latched alarms will be cleared...

Страница 59: ...following information with any equipment being returned 1 Your name company name address and telephone number order number and invoice and return delivery address 2 Description and serial number of eq...

Страница 60: ...nclosure Minimum of IP54 or UL50 NEMA Type 3 3S 4 4X 6 6P or 13 See Section 4 Mechanical Installation Enclosure rating front panel only NEMA type 4 hose down only UL approval and IP65 verified by TRAC...

Страница 61: ...1 5 mm 18 16 AWG Maximum length 100 m 9990 and 999 0 ranges 30 m 99 90 range 10 m 9 990 range Recommended type Prysmian Pirelli FP200 Delta Crompton Firetuf OHLS Pt100 probe Type High temperature twi...

Страница 62: ...high EMC 5 FSD for 0 9 999 range pH factor 0 50 1 00 0 7 default Neutralising factor 0 7 Resolution 0 1 FSD Drive ac 4 wires Temperature compensation TC Sensor type Pt100 Class B or better Range 0 250...

Страница 63: ...Vac Inductive load 1 amp 250 Vac ac motor load HP 2 9 amp 250 Vac 1 10 HP 3 amp 120 Vac Pilot duty load C300 2 5 amp control circuit coils Electrical life operations 3 x 105 or greater depending on l...

Страница 64: ...Ranges C or F Default C UNITS TDS or conductivity units Ranges S cm or ppm Default S cm PH TERM Ranges 0 50 1 00 Default 0 7 Resolution steps 0 01 Assuming S cm to ppm conversion 0 7 10 8 3 INPUT MENU...

Страница 65: ...INTERVAL Time between purges Ranges 10 60 Default 30 Resolution steps 1 Units Minutes TDS PURGE BURNER Purge time dependant on time or burner firing time Only available if PURGE DURATION is greater t...

Страница 66: ...ysteresis Ranges 0 SP Default 5 FSD Resolution steps 0 1 FSD Units S cm or ppm TDS CAL Actual water TDS or conductivity to calibrate product Ranges 0 FSD Default 4000 Resolution steps 0 1 FSD Units S...

Страница 67: ...TERVAL Time between probe cleaning Only available if CLEAN DURATION is greater than 0 seconds Ranges 1 99 Default 12 Resolution steps 1 Units Hours CLEAN Only available if CLEAN DURATION is greater th...

Страница 68: ...20 mA Ranges 0 FSD Default FSD Resolution steps 0 1 FSD Units S cm or ppm COMMS ADDRESS MODBUS communication Ranges 1 247 Default 1 COMMS BAUD MODBUS communication Ranges 1200 9600 19200 Default 9600...

Страница 69: ...ION is greater than 0 seconds Ranges FITTED or NONE Default FITTED CLOSING Time allowed for valve to close Only available if TIMER DURATION is greater than 0 seconds Ranges 1 10 Default 5 Resolution s...

Страница 70: ...RM Default 3 FSD Resolution steps 0 1 FSD Units S cm or ppm DELAY Process Variable alarm delay Ranges 0 99 Default 0 Resolution steps 1 Units Seconds BB LIFT Alarms occurs if valve does not lift off t...

Страница 71: ...3 ohms 1 4 Mohms Only available if a Pt100 is fitted INPUT OP TEMP Boiler water operating temperature Ranges 0 250 C or 32 482 F Resolution steps 1 Units C or F INPUT PROBE F Calculated cell or probe...

Страница 72: ...s 0 Ranges ON or OFF Default ON Press the OK button to activate the relay Automatic control of relays is selected by selecting cancel or after 5 minutes has elapses OUTPUT ALARM 1 Energises or de ener...

Страница 73: ...s Quantity of registers 2 bytes Cyclic redundancy check CRC 2 bytes Total 8 bytes Format Response frame Address 1 byte Function code 1 byte or error code function code plus 128 Byte count 1 byte or ex...

Страница 74: ...aster s database 1 Process variable PV TDS 25 C 2 Set Point SP 3 S cm or ppm general data 4 Alarm 1 5 Range index 6 Probe factor 7 Temperature compensation C or F 8 Purge time seconds 9 Clean duration...

Страница 75: ...INS DAYS Shown if CP32 selected Not shown if duration 0 Visible ONLY when Purge Duration MANUAL 0 seconds Note default ON but OFF if AUTO of Duration manual 0 Explanation If ON product alarms if valve...

Страница 76: ...IM P403 89 EMM Issue 8 76...

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